同步辐射X射线微探针研究宝石矿物成色与某些微量元素的关系

Investigation of Gem Minerals for Micro-elements by the Use of Synchrotron Radiation XRF

利用北京正负电子对撞机（ＢＥＰＣ）提供的同步辐射（ＳＲ）白光为激发源（束斑尺寸１００μｍ×１００μｍ，计数时间１００ｓ／点），研究了蓝宝石、红宝石、紫晶、祖母绿的天然、加工和合成品的微量元素成分，对于鉴别宝石提供了有益的信息。

Micro-elements in sapphire, ruby,amethyst,emerald,and some man-made products were measured by using a white beam irom a wiggle source at BEPC.The electron energy in the BEPC storage ring was 2. 2 GeV,and the beam intensity was<50 mA, using a beam size of 100 μm×100 μm,and a 100 s counting time.The measurement was useful for providing some information for the identification of gems.